Ivan Voras <[EMAIL PROTECTED]> >Something like that has been done, for example on FreeSBIE livecd of >FreeBSD (using devd(8) IIRC). But there's a major problem when devices >get disconnected (i.e.: the device gets pulled from under the mounted >filesystem).
Actually it's easy to panic DragonFly (or FreeBSD, last I checked, which was early 5.x) by pulling out any USB device while it's in use -- not necessarily a storage device, it happens for me with a USB-to-serial convertor too, and used to happen under FreeBSD with a USB audio device. Annoyingly the USB audio device was often not actually in use (no audio playback/recording happening, no mixer program running), but the kernel still believed it was in use and refused to "detach" it even though it was physically gone. The panic happened if I plugged it in again. > AFAIK, this problem was considered too complex to deal at >this time because it involved re-architecting portions of VFS. The response I got on the FreeBSD lists at that time was it would involve major rearchitecting of something else (not VFS) since the kernel assumes that a device, once detected, will always be there and will not be abruptly yanked out... I don't know if this has changed lately. Rahul